SCI: KQ6CD program crashes in dialogues ("portrait ALEX.bin not found")

[lwcorp]

​The Internet Archive has this game, but it crashes the first time you attempt to talk to anyone.

Steps to reproduce
1) Start the game (this version is dual Windows/DOS so choose either)
2) Go up
3) Go top left or top right
4) Talk to someone

Expected behavior
Start a dialogue

Actual result
Game crashes with:

ERROR: portrait ALEX.bin not found!

Additional notes

1. While this version of the game lacks it, other versions have a subfolder called ACTORS that indeed has a file called ALEX.bin.
2. Some reviewers of The Internet Archive complained about crashes, but none of them mentioned ScummVM (it seems they played it right online there via DOSBox) and none of them referred to dialogue related crashes.

Tried it in the latest daily 2.3.0git16139-g21fdb18a4d (May 15 2021 06:13:57)